CN209875335U - Integrated air intake system silencer - Google Patents
Integrated air intake system silencer Download PDFInfo
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- CN209875335U CN209875335U CN201920478759.9U CN201920478759U CN209875335U CN 209875335 U CN209875335 U CN 209875335U CN 201920478759 U CN201920478759 U CN 201920478759U CN 209875335 U CN209875335 U CN 209875335U
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- air inlet
- pipe
- inlet pipe
- silencer
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Abstract
The utility model discloses an integrated form air intake system silencer, including the intake pipe that is located between air cleaner and the booster, the fixed silencer that is equipped with in the intake pipe has relief valve intake pipe, fuel desorption intake pipe and crankcase breather pipe to weld respectively in the intake pipe. The intake pipe includes the empty supercharger end intake pipe that strains the end intake pipe and communicate with the booster with air cleaner intercommunication, and empty supercharger end intake pipe and booster end are put between the intake pipe and are welded through the interlude intake pipe and become integrative. The muffler includes the upper portion muffler and the lower part muffler of lower extreme of welding respectively in the interlude intake pipe upper end. The integrated air inlet pipe effectively reduces the arrangement space required by the air inlet pipe of the pressure release valve, the fuel oil desorption air inlet pipe and the crankcase breather pipe, so that the whole air inlet pipeline has a compact structure; the opening density of the upper silencing holes and the lower silencing holes is increased from one side of the air inlet pipe at the air filtering end to one side of the air inlet pipe at the supercharger end in sequence, and the noise of a frequency range of 1000 Hz-3500 Hz can be effectively eliminated.
Description
Technical Field
The utility model relates to an automobile air intake system technical field specifically indicates an integrated form air intake system silencer.
Background
Supercharged engines have become the mainstream design of each large main engine plant, but superchargers have obvious high-frequency noise, and a corresponding high-frequency silencer is required to be added to an air inlet system to perform silencing treatment on the superchargers. Meanwhile, when the pressure booster is used for pressure relief, the pressurized gas needs to be released from a high pressure position to a low pressure position, and pressure relief noise is generated in the process. The pressure relief valve is arranged outside and in a position far away from the cabin, so that pressure relief sound can be effectively weakened. The outlet pipe of the pressure relief valve needs to be connected to a low-pressure air inlet system, and the air inlet system is required to provide a corresponding interface to ensure that the outlet pipe of the pressure relief valve is connected.
For positive crankcase ventilation systems, the blow-by gas in the crankcase needs to be communicated with the low-pressure gas before pressurization so as to achieve the effect of balancing the pressure of the crankcase. For a fuel desorption system, fuel vapor needs to be introduced into an air intake system and then enters the engine again for combustion.
Therefore, for the air intake system, besides arranging the high-frequency silencer, a pressure relief pipeline, a crankcase ventilation system and a fuel desorption system pipeline interface are also needed to be provided. And in order to deal with the national emission upgrade, the air inlet pipeline changes along with the structural change of the crankcase ventilation pipeline and the fuel desorption pipeline. This presents a major challenge to the structure, arrangement, and versatility of the intake system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the deficiencies of the prior art, providing a compact structure, spatial layout is reasonable, and the integrated air intake system silencer that has a plurality of interfaces.
In order to achieve the above object, the utility model provides an integrated form air intake system silencer, including being located the silencer intake pipe between air cleaner and the booster, the fixed silencer that is equipped with in the silencer intake pipe, its characterized in that: and the muffler air inlet pipe is respectively bypassed with a pressure release valve air inlet pipe, a fuel oil desorption air inlet pipe and a crankcase breather pipe.
Further, the silencer intake pipe includes the empty end intake pipe of straining that communicates with air cleaner and the booster end intake pipe that communicates with the booster, empty end intake pipe of straining with pass through interlude intake-tube connection between the booster end intake pipe.
Further, the muffler comprises an upper muffler fixed at the upper end of the middle section air inlet pipe and a lower muffler fixed at the lower end of the middle section air inlet pipe.
Furthermore, the upper silencer is divided into a plurality of upper cavities which are not communicated with each other through a plurality of upper partition plates, and a plurality of upper silencing holes are formed in the pipe wall of the upper cavities, which is connected with the middle section air inlet pipe.
Furthermore, the lower silencer is divided into a plurality of lower cavities which are not communicated with each other through a plurality of lower partition plates, and a plurality of lower silencing holes are formed in the pipe wall of the lower cavities, which is connected with the middle section air inlet pipe.
Preferably, the hole density of the upper silencing hole and the lower silencing hole is increased from the air inlet pipe side of the air filter end to the air inlet pipe side of the supercharger end in sequence.
Preferably, a plurality of upper reinforcing ribs and lower reinforcing ribs are respectively arranged on the inner walls of the upper chamber and the lower chamber.
Preferably, one end of the upper silencer close to the air filtering end air inlet pipe is further provided with a pressure relief valve air inlet cavity which is in bypass connection with the middle end air inlet pipe, and the pressure relief valve air inlet pipe is communicated with the pressure relief valve air inlet cavity.
Preferably, the fuel oil desorption air inlet pipe and the middle section air inlet pipe are in bypass connection, and the crankcase ventilation pipe and the supercharger end air inlet pipe are in bypass connection.
Preferably, a high-frequency silencing pipe is bypassed on the air inlet pipe at the air filtering end.
The utility model has the advantages that:
1. compact structure and reasonable space layout. The air inlet pipe of the pressure release valve, the fuel oil desorption air inlet pipe and the crankcase breather pipe are integrally connected to the air inlet pipe of the silencer section, so that the arrangement space of the pipelines is effectively reduced, the air inlet pipeline of the whole air inlet system is compact in structure, and the space of an automobile is saved.
2. Effectively eliminating high-frequency noise. The silencer is divided into an upper silencer and a lower silencer, and the opening density of the upper silencing holes and the opening density of the lower silencing holes are sequentially increased from one side of the air inlet pipe at the air filtering end to one side of the air inlet pipe at the supercharger end, so that the noise of a frequency range of 1000 Hz-3500 Hz can be effectively eliminated, and the environmental comfort level in an automobile can be effectively improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a muffler.
Fig. 2 is a cross-sectional view of a muffler.
Fig. 3 is a view from direction a in fig. 2.
Fig. 4 is a view from direction B of fig. 2.
Fig. 5 is a view taken along direction C in fig. 2.
Fig. 6 is a graph of muffler transmission loss.
The components in the figures are numbered as follows: the air inlet pipe comprises a silencer air inlet pipe 1, an air filtering end air inlet pipe 101, a middle section air inlet pipe 102, a supercharger end air inlet pipe 103, a high-frequency silencing pipe 2, an upper silencer 3, an upper partition plate 301, an upper silencing hole 302, an upper reinforcing rib 303, a pressure release valve air inlet cavity 304, a lower silencer 4, a lower partition plate 401, a lower silencing hole 402, a lower reinforcing rib 403, a pressure release valve air inlet pipe 5, a fuel desorption air inlet pipe 6, a crankcase breather pipe 7 and a warm air water pipe buckle 8.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.
As shown in figures 1-6, an integrated form air intake system silencer, including the silencer intake pipe 1 that is located between air cleaner and the booster, fixed silencer, its characterized in that of being equipped with on the silencer intake pipe 1: a pressure release valve air inlet pipe 5, a fuel oil desorption air inlet pipe 6 and a crankcase breather pipe 7 are respectively welded on the silencer air inlet pipe 1; the muffler air inlet pipe 1 comprises an air filtering end air inlet pipe 101 communicated with an air filter and a supercharger end air inlet pipe 103 communicated with a supercharger, and the air filtering end air inlet pipe 101 and the supercharger end air inlet pipe 103 are welded into a whole through a middle section air inlet pipe 102; the muffler includes an upper muffler 3 and a lower muffler 4 welded to the upper and lower ends of the middle intake pipe 102, respectively. The air inlet pipe of the pressure relief valve, the fuel oil desorption air inlet pipe and the crankcase breather pipe are integrally connected to the air inlet pipe of the silencer section, so that the space required to be arranged of the air inlet pipe of the pressure relief valve, the fuel oil desorption air inlet pipe and the crankcase breather pipe is effectively reduced, the air inlet pipeline of the whole air inlet system is compact in structure, the silencer is designed into an upper part and a lower part, and the space is further saved.
In the technical scheme, the air inlet pipe of the pressure relief valve leads low-pressure gas decompressed by overpressure at the supercharger back to the air inlet pipe in front of the supercharger again, so that smooth pressure relief is ensured, and waste of inlet air is reduced; the fuel desorption air inlet pipe introduces fuel steam evaporated in the fuel tank into the air inlet pipe, so that the fuel steam is prevented from being discharged into the atmosphere, and the emission requirement of the whole vehicle is met; the crankcase breather pipe communicates the gas fleeed out of the crankcase with the low-pressure gas of the gas inlet pipe before pressurization, so as to achieve the effect of balancing the pressure of the crankcase.
In the above technical solution, a pressure release valve air inlet chamber 304 that bypasses the middle end air inlet pipe is further provided at one end of the upper muffler 3 close to the air filtering end air inlet pipe 101, and the pressure release valve air inlet pipe 5 is communicated with the pressure release valve air inlet chamber 304; the fuel oil desorption air inlet pipe 6 is in bypass connection with the middle section air inlet pipe 102, and the crankcase ventilation pipe 7 is in bypass connection with the supercharger end air inlet pipe 103. Like this, select suitable hookup location according to the trend and the connection angle of each bypass pipeline for the spatial layout of intake pipe is further optimized, avoids and relief valve intake pipe to be connected to empty filter end intake pipe, and the fuel vapor in the relief valve intake pipe pollutes empty filter core, has also avoided relief valve intake pipe to be connected to booster end intake pipe, because the gas flow is inhomogeneous and causes the noise of whistling.
In the above technical solution, the upper silencer 3 is divided into a plurality of upper chambers that are not communicated with each other by a plurality of upper partition plates 301, and a plurality of upper silencing holes 302 are opened on the pipe wall of the upper chambers connected with the middle section air inlet pipe 102; the lower muffler 4 is divided into a plurality of lower chambers which are not communicated with each other by a plurality of lower partition plates 401, and a plurality of lower muffling holes 402 are formed on the pipe wall of the lower chambers connected with the middle section air inlet pipe 102. The hole density of the upper silencing hole 302 and the lower silencing hole 402 is increased from the air filter end air inlet pipe 101 side to the supercharger end air inlet pipe 103 side in sequence; the inner walls of the upper chamber and the lower chamber are respectively provided with a plurality of upper reinforcing ribs 303 and lower reinforcing ribs 403, so that the radiation noise transmitted outwards can be reduced. Thus, the silencer is divided into an upper part and a lower part, the silencer is fixedly installed and the silencing holes are arranged, and meanwhile, a certain space is reserved for arrangement of the air inlet pipe of the pressure release valve, the fuel desorption air inlet pipe and the crankcase breather pipe; the opening density of the upper muffling hole and the lower muffling hole is increased in sequence, and the frequency of noise which can be eliminated by the muffling holes is increased in sequence, as shown in fig. 6, the horizontal axis represents the frequency f of the noise, and the vertical axis represents the transmission loss ratio η of the noise, so that the muffler can effectively eliminate the noise in the frequency range of 1000Hz to 3500 Hz.
In the technical scheme, the air inlet pipe 101 at the air filtering end is welded with the high-frequency silencing pipe 2, so that high-frequency noise can be eliminated; the supercharger end air inlet pipe 103 is welded with a warm air water pipe buckle 8 for fixing a warm air water pipe.
Claims (10)
1. The utility model provides an integrated form air intake system silencer, is including silencer intake pipe (1) that is located between air cleaner and the booster, fixed silencer, its characterized in that of being equipped with on silencer intake pipe (1): a pressure release valve air inlet pipe (5), a fuel oil desorption air inlet pipe (6) and a crankcase vent pipe (7) are respectively communicated with the silencer air inlet pipe (1).
2. The integrated intake system muffler of claim 1, wherein: silencer intake pipe (1) including with the empty end intake pipe (101) of straining of air cleaner intercommunication and with booster end intake pipe (103) of booster intercommunication, empty end intake pipe (101) of straining with connect through interlude intake pipe (102) between booster end intake pipe (103).
3. The integrated intake system muffler of claim 2, wherein: the silencer comprises an upper silencer (3) and a lower silencer (4), wherein the upper silencer and the lower silencer are respectively fixed at the upper end and the lower end of an air inlet pipe (102) in the middle section.
4. The integrated air intake system muffler of claim 3, wherein: the upper silencer (3) is divided into a plurality of upper chambers which are not communicated with each other through a plurality of upper partition plates (301), and a plurality of upper silencing holes (302) are formed in the pipe wall of the upper chambers, which is connected with the middle section air inlet pipe (102).
5. The integrated air intake system muffler of claim 4, wherein: the lower silencer (4) is divided into a plurality of lower chambers which are not communicated with each other through a plurality of lower partition plates (401), and a plurality of lower silencing holes (402) are formed in the pipe wall of the lower chambers, which is connected with the middle section air inlet pipe (102).
6. The integrated intake system muffler of claim 5, wherein: the hole density of the upper silencing hole (302) and the lower silencing hole (402) is increased from one side of the air filter end air inlet pipe (101) to one side of the supercharger end air inlet pipe (103).
7. The integrated intake system muffler of claim 5, wherein: and a plurality of upper reinforcing ribs (303) and lower reinforcing ribs (403) are respectively arranged on the inner walls of the upper chamber and the lower chamber.
8. The integrated air intake system muffler of claim 4, wherein: one end of the upper silencer (3) close to the air filtering end air inlet pipe (101) is further provided with a pressure release valve air inlet chamber (304) which is in bypass connection with the middle end air inlet pipe, and the pressure release valve air inlet pipe (5) is communicated with the pressure release valve air inlet chamber (304).
9. The integrated air intake system muffler of claim 3, wherein: the fuel oil desorption air inlet pipe (6) and the middle section air inlet pipe (102) are in bypass connection, and the crankcase ventilation pipe (7) and the supercharger end air inlet pipe (103) are in bypass connection.
10. The integrated air intake system muffler of claim 3, wherein: and a high-frequency silencing pipe (2) is bypassed on the air inlet pipe (101) at the air filtering end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920478759.9U CN209875335U (en) | 2019-04-10 | 2019-04-10 | Integrated air intake system silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920478759.9U CN209875335U (en) | 2019-04-10 | 2019-04-10 | Integrated air intake system silencer |
Publications (1)
| Publication Number | Publication Date |
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| CN209875335U true CN209875335U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920478759.9U Active CN209875335U (en) | 2019-04-10 | 2019-04-10 | Integrated air intake system silencer |
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| CN (1) | CN209875335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482812A (en) * | 2021-06-30 | 2021-10-08 | 东风汽车集团股份有限公司 | Anti-icing device for air inlet main pipeline and vehicle |
-
2019
- 2019-04-10 CN CN201920478759.9U patent/CN209875335U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482812A (en) * | 2021-06-30 | 2021-10-08 | 东风汽车集团股份有限公司 | Anti-icing device for air inlet main pipeline and vehicle |
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